<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>1_字符串形式的ref</title>
</head>
<body>
    <!-- 准备好一个“容器” -->
    <div id="test1"></div>
    <!-- 引入react核心库 -->
    <script type="text/javascript" src="../js/react.development.js"></script>
    <!-- 引入react-dom，用于支持react操作DOM -->
    <script type="text/javascript" src="../js/react-dom.development.js"></script>
    <!-- 引入babel，用于将JSX转为JS -->
    <script type="text/javascript" src="../js/babel.min.js"></script>
    <script type="text/babel">
        //创建组件
        class Demo extends React.Component {
            //展示左侧输入框的数据
            showData = ()=>{
                console.log(this.input1)
                const{input1} = this
                alert(input1.value)
            }
            //展示右侧输入框的数据
            showData1 = () =>{
                console.log(this.input2)
                const{input2} = this
                alert(input2.value)
            }

            render(){
                return(
                    <div>
                        <input ref={(c) =>{this.input1 = c}} type="text" placeholder="点击按钮提示数据"></input>&nbsp;
                        <button onClick={this.showData}>点我提示左侧的数据</button>&nbsp;
                        <input ref={c => this.input2 = c } onBlur={this.showData1} type="text" laceholder="失去焦点提示数据"/>
                    </div>
                )
            }
        }
        //渲染组件到页面
        ReactDOM.render(<Demo/>,document.getElementById('test1'))
    </script>
</body>
</html>